diff --git a/app/js/services.js b/app/js/services.js
index f74d0502..ab350a97 100644
--- a/app/js/services.js
+++ b/app/js/services.js
@@ -3161,7 +3161,7 @@ angular.module('myApp.services', ['myApp.i18n', 'izhukov.utils'])
                         "\\uffa1-\\uffdc";                  // half width Hangul (Korean)
 
   var regexAlphaNumericChars  = "0-9\.\_" + regexAlphaChars;
-  var regExp = new RegExp('((?:(ftp|https?)://|(?:mailto:)?([A-Za-z0-9._%+-]+@))(\\S*\\.\\S*[^\\s.;,(){}<>"\']))|(\\n)|(' + emojiUtf.join('|') + ')|(^|\\s)(#[' + regexAlphaNumericChars + ']{3,20})', 'i');
+  var regExp = new RegExp('((?:(ftp|https?)://|(?:mailto:)?([A-Za-z0-9._%+-]+@))(\\S*\\.\\S*[^\\s.;,(){}<>"\']))|(\\n)|(' + emojiUtf.join('|') + ')|(^|\\s)(#[' + regexAlphaNumericChars + ']{2,20})', 'i');
   var youtubeRegex = /(?:https?:\/\/)?(?:www\.)?youtu(?:|\.be|be\.com|\.b)(?:\/v\/|\/watch\\?v=|e\/|(?:\/\??#)?\/watch(?:.+)v=)(.{11})(?:\&[^\s]*)?/;
   var vimeoRegex = /(?:https?:\/\/)?(?:www\.)?vimeo\.com\/(\d+)/;
   var instagramRegex = /https?:\/\/(?:instagr\.am\/p\/|instagram\.com\/p\/)([a-zA-Z0-9\-\_]+)/i;